Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Cell enclosure structure – e.g. – housing – casing – container,...
Patent
1987-05-19
1989-02-14
Kalafut, Stephen J.
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Cell enclosure structure, e.g., housing, casing, container,...
429181, 429184, H01M 208, H07M 202
Patent
active
048045934
ABSTRACT:
The present invention relates an enclosed cell and fabricating methods of the cell which has a safety valve mechanism for releasing gas from inside the cell when an internal pressure of the cell rises to an excessive degree. The characterizing feature of the invention resides in the use of a resin packing as sealing element, junctions between the resin packing and a metal lid and between the resin packing and a polar terminal being closed tight by thermal fusion. This construction assures reliable sealing in normal state, and permits the packing to break with an excessive rise in the internal pressure thereby to release gas from inside the cell. The cell of this invention is readily fabricated by injection molding or by a hot press process. Therefore, the enclosed cell according to this invention is fabricated very rationally and inexpensively, assures excellent sealing and safety, and has wide application.
REFERENCES:
patent: 3340099 (1967-09-01), Sherfey
patent: 3963521 (1976-06-01), Jache
patent: 4107403 (1978-08-01), Takamura et al.
patent: 4559283 (1985-12-01), Kruger et al.
patent: 4629665 (0000-01-01), Matsuo
Amazutsumi Tooru
Hara Mitsunori
Nagao Nobuhiro
Urushihara Kanji
Kalafut Stephen J.
Sanyo Electric Co,. Ltd.
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